I have an old gasoline engine on a boat, and every season change the points, plugs, rotor (hey, it’s a boat), and check the ports on the carburetor.
A younger boater asked what I had been doing, and I mentioned the carburetor. The blank look told me everything. He was a sharp kid, but had never seen anything that wasn’t electronically timed and fuel injected.
Then we started talking about diesel boat engines, and things got less weird.
Totally believable. Meanwhile, I’ve still got a timing light buried away in the toolbox. That’d be a What’s that? moment with that guy.